Journal article

Trajectory of a synthetic jet issuing into high-Reynolds-number turbulent boundary layers

Tim Berk, Nicholas Hutchins, Ivan Marusic, Bharathram Ganapathisubramani

JOURNAL OF FLUID MECHANICS | CAMBRIDGE UNIV PRESS | Published : 2018

Abstract

Synthetic jets are zero-net-mass-flux actuators that can be used in a range of flow control applications. For some applications, the scaling of the trajectory of the jet with actuation and cross-flow parameters is important. This scaling is investigated for changes in the friction Reynolds number, changes in the velocity ratio (defined as the ratio between the mean jet blowing velocity and the free-stream velocity) and changes in the actuation frequency of the jet. A distinctive aspect of this study is the high-Reynolds-number turbulent boundary layers (up to ) of the cross-flow. To our knowledge, this is the first study to investigate the effect of the friction Reynolds number of the cross-..

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Grants

Awarded by European Research Council (ERC)


Awarded by Engineering and Physical Sciences Research Council (EPSRC)


Funding Acknowledgements

T.B. and B.G. acknowledge the financial support from the European Research Council (ERC grant agreement no. 277472), the Engineering and Physical Sciences Research Council (EPSRC grant no. EP/L006383/1) and Airbus. I.M. and N.H. acknowledge the support of the Australian Research Council.